Cooker.



w.1. BURNETIT.

COOKER.

, APPLICATION FILED PI-18.8, IBIS.

1,161,838. Pat ented N0... 30, 1915.

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Z'a izzemw 2 SHEETS-SHEET 2.

Patented Nov. 30,1915.

W. J. BURNETT.

COOKER.

APPLICATION man r55 8, m5.

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horizontal section; Fig.

UNITED STATES PATENT onnion j WILLIAM J. BURNETT, or MINNEAPOLIS, MINNESOTA.

COOKER.

v Specification of Letters Patent. Patented N 30" 1915 Application filed February 8,1915. Serial No. 6,918.

To all whom it may concern:

Be it known that 1, WILLIAM J. BUnNETT, a citizen of the United States, residing. at

Minneapolis, inzthe county of Hennepin'and State of Minnesota, have invented certain new and useful Improvements in Cookers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains'to make and use the same. I

My invention relates to improvements in cookers; and, to this end, it consists of the novel devices. and combinations of devices the so-called heat distributing plate; Fig. 3

is a perspective view of the steam .boiler with the ovens removed, some parts being broken away; Fig. 4 is a vertical section taken longitudinally and centrally'through the improved cooker; Fig. 5 is a vertical section taken on the line X? X of Fig. 4, and also showing a portion of" the burner and grill of a gas stove; G is adetail view principally in horizontal section taken on the line X X .ofFig. 4, on an enlarged scale, some parts being broken away and some of the exposed parts being shown in 7 is a view corresponding to Fig. 5, withthe exceptionthat the improved cooker is in connectionwith a wood or coal stove; Fig. 8 is a detail view in section taken on the line X 'X of Fig. 5; and Fig. 9 shows'the improved cooker as used in connection with a campstove.

The numeral 1 indicates a rectangular steam boiler having a combustion flue or chamber 2 that extends vertically and centrally therethrough, and having an offset filling neck 3 normally closed by a cork 4. This steam boiler 1 is also provided with an upwardly projecting marginal flange 5, and hand pieces 6, by whichsaid boiler may be carried. Extending horizontally within the steam boiler 1, just below the top thereof and above the water-line Y, is a hot air pipe '7, the receiving end of which extends into ,the combustion flue2- and thedelivery end 'secured to the back of the ovens.

thereof iszbent into a vertical position and extended slightly above the top of the steam boiler 1 A pair of horizontally extended converging steam tubes 8 are located within the 1 steam boiler 1. The delivery ends of these steam tubes 8 are contracted to afford discharge nozzles 9 which extend into the hot a r' pipe 7 at diametrically opposite polnts. I

Removably mounted on top of the steam bollerl, within the flanges 5 thereof, are upper and lower ovens 10 and 11, respectively. Each of these ovens is: provided with a, hinged. door 12 normallyheld closed by a latch 13. Hand pieces 14 are secured ovens may be carried The ovens are insulated by forming the same with double walls with dead air spaces therebetween. The doors '12, aswell asthe partition between the two, ovens, are also formed with double walls with dead air spaces therebetween. The oven 11 has no bottom, but when the ovens and steam boiler are assembled, the top of said boiler affords a bottom to the sides of the oven 10, by which the above on guide strips '15 secured to the inner walls of the ovens.

Located between the rear walls of the ovens is a vertical pipe 16', the lower end of which is'telescoped over the delivery end of the pipe 7 and forms an extension thereof.v

The upper end of the pipe 16 is closedby cork 17, and ports or passageways 18 connect said pipe with the ovens 10 and 11 just under the tops thereof, and through which livered into said ovens.

'A drip pipe19 is provided for carrying away condensed steam which may accumulate on the bottom of the oven 10 "anddelivers'the same into a drip cup 20 detachably Within the drip pipe 19 is a wick 21 which prevents the escape of the steam. The condensed steam in thelower oven'll is taken care of by thehe'at from the combustion flue 2.

'ports commingled steam and hot air from I -=thebo1ler 1 and combustion flue 2'is deinverted to cut ofi the direct passage of heat from the combustion flue 2 into the lower oven 11.

burner thereof, directly over which is located the combustion flue. 2.. lVhen the improved heater is used in connection with an ordinary wood or coal stove 28, as shownin Fig. 7 a special lid 29 having adome 30- is placed over oneof thestoveholes 31. This dome 30 is telescopecl into-thecombustion flue 2 and prevents the smoke and gases from passing up into the .ovens.

In.-.F1g.. 9, the improved cooker is shown as used in connection with afolding camp i the whistle 34.

stove 32. In this use of the cooker, the-lid 29 will ibe supportedon: the top-,of the camp stove directly over the hole. 33 formedin the top thereof.v

As a warning to prevent the :water I from evaporating entirely fromthe boiler 1 and causingv the same. to become dry, a-whistle 10.. This whistle 34' is actuatedby-a. steam pipe 35 which extends between the; rear walls of theovens into the boiler 1 and terminates slightly above the bottomthereof. Obviously, when the water in the boiler drops to a point below the lower end-of the steam pipe 35, the steam in. said-boiler will then escape through said pipe and blow The steam pipe 35 is made in two sections telescopically connected at the top of the boiler l'to permitthe removal of the ovens from the steam boiler.

The operation of the improved cooker may be briefly described as follows: The steam generated in the boiler lwill escape through the steam tubes 8, nozzles 9. an'dinto the pipe 7 Where the jets of steam meet within the hot air pipe 7, a partial vacuum will be caused, thereby drawing the hot air from the combustion flue 2 into said hot air pipe. from the junction of the nozzles 9 will be forced upward through the hot air pipes 7 and 16 and into the ovens 10 and 11. If it is desired to cook part of. the food with dry mingled steam and hot air thereto, foodmay be cooked: in the lower oven entirely by hot aindirect from the burner, and food may becookedin the upper oven by steam alone. What I claim-is: V

1. Ina cooker,- theli combination witha-a 8 1 is provided, located on top of the oven The commingled steam and hot air steam boiler having a combustion chamber extending vertically therethrough, of upper and lower ovens supported on the boiler In Fig. 5, the improved cooker is shown supported on the grill 25 of a gas or vapor stove 26, and the numeral 27 indicates the with the combustion chamber opening directly into the lower oven, a hot air pipe extending from the combustion chamber through the steam boiler through the two extending from the combustion chamber 5 through the steam boiler through the two ovens and having ports opening one-into each oven, and a pair of d1ametr1cally..op-

'posite steam nozzles located in the steam boiler andextendinguinto the hot air pipe at points where the same passes through the steam boiler. I

3. In acooker, the combination with a steamboiler havinga combustion flue extending. therethrough, upper and lower ovens supported on said 1 boiler, said combustion flue= opening directly into said lower oven, steam andhot air c'onduitsleading from said boiler, combustion flue arranged, to commingle the;steam and hot air and deliver the sameinto said bvens, and means for cutting voil the discharge of commingled steam and hot air into said lower oven, at will.

4:. Ina cooker, the combination with a steam boiler havinga combustion flue extending therethrough, upper and lower ovens supported on said boiler, said combustion flue opening directly into saidlower oven,

steam and hot air conduits leading from said boiler, combustion flue arranged to commingle the steam and hot air and deliver the same into, said ovens, means for cutting off the discharge of commingled steam and hot air into said lower oven, at

will, a drip pipe'leading from said upper.

oven, a wick in said drip pipe, and a drip cup arranged to receive from said drip pipe.

5. In a cooker, the combination with a steam boiler having a combustion flue extending therethrough, of an oven supported.

on said boiler, said combustion flue open ng directly into said oven, steam and hot air conduits leading-from said boiler and combustion flue, arranged to .commingle' the steam and hot. air and deliver the same into said oven, and a, removable spreader plate in saidoven overlying said combustion flue.

6. In a cooker, the combination with a steam boiler having a combustion. flue extending therethr'ough, ofan oven supported on said boiler, said combustion-flue opening directly into said oven, steam and hot air conduits leading from sald boiler and combustion flue, arranged to commingle the steam and hot air and deliver the same into said oven, and a reversible spreader plate in said oven adapted, when in one position, to close said combustion flue, and, When in another position, to spread the flame.

7. In a cooker, the combination with the lid for a stove hole having a dome, of a steam boiler, mounted on said lid, and having an upright combustion flue into which Copies oi this patent may be obtained for the dome of said lid is telescoped, an oven supported on said boiler, and conduits leading from said boiler and combustion flue, arranged to commingle the steam and hot air and deliver the same into said boiler.

In testimony whereof I affix my signature in presence of two Witnesses.

WILLIAM J. BURNETT.

HARRY D. KILGORE,

five cents each, by addressing the Commissioner of Patents.

Washington, I). C. 

